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. Machine fer Filing Gin Saws.

-No. 239,251. Patented March 22,1881;

(Model) V 2 Sheets-Sheet 2.

J. H-OSEY.

Machine fo r Filing Gin Saws. No. 239,251. Patented March 22,1881.

NEETERS1 PNDTD-LITHOGRAPHER. WASHINGTOMD C.

UNITE STATES JAMES HOSEY, OF MACON, GEORGIA.

MACHINE FOR FILING GIN-SAWS.

SPECIFICATION forming part of Letters Patent No. 239,251, dated March 22, 1881;

Application filed December 16, 1880.

To all whom tt may concern:

Be it known that I, JAMES HOSEY, of Macon, in thecounty of Bibb and State of Georgia, have invented certain new and useful Improvements in Machines for Filing Gin-Saws; and I do hereby declare the following to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains to make and use it,

reference being had to the accompanying drawings, which form part of this specification.

My invention relates to an improvement in gin-saw-filing machines; and it consists in the combination of the feed-rod, its two bearingplates, one of which is vertically and the other laterally adjustable, the slotted supportingframe, set-screws, and spring, whereby the feed-rod can be adjusted.

It further consists in the combination of the file-rods, a vertically-adjustable plate, a laterally-adjustable plate, a spring, and suitable set-screws, whereby the fileis pressed against the teeth with any desired degree of force.

It still further consists in the arrangement and combination of parts, which will be more fully described hereinafter.

Figure 1 is a plan view of my invention. Fig. 2 is a side elevation of the same. Fig. 3 is a detail view of the file-rod and grooved plate. Figs. 4 and 5 are detail views.

A represents a base'plate, of any suitable description, which has the L-shaped casting (l secured to its under side. Passed through this casting at any desired angle is a clamping-screw, B. Secured to the opposite end of this base is a second L-shaped casting, D, through which passes a second clam ping-screw, E, and these two screws serve to secure the machine to the rear top sill of the gin while the saws are being sharpened.

J ournaled in the casting G is the shaft F and roller G, which shaft has a thumb-wheel on its outer end, by means of which the machine is moved along. from one saw to the other. While one of the saws is being sharpened the clamping-screws hold the machine securely in place; but when it is desired to move the machine onto the next saw one or both screws are loosened, and then, by turning the roller G, the machine slides along upon the top of the frame.

Upon the top of the base are secured suita- (ModeL) set-screws P is the coupling 0. This coup-n ling passes down over the top of the rod Q, and is fastened thereto by means of the setscrew It at any desired point. As this coupling is pivoted to the rod N, the coupling can be adjusted up and down upon the rod Q, so

as to give it a longer or a shorter motion, as i may be desired. This rod Q is pivoted upon the top of the base, and as the rod N is worked back and forth by the eccentric on the shaft the rod Q is rocked back and forth at the same time.

Also secured to the rod Q is a second coupling, R, which is connected by means of the pivoted straps S to the rear end of the feedrod T, and by means of which parts the rod T is reciprocated back and forth when a rocking motion is imparted to the rod Q. This feed-rod has its bearings upon the plate U,

which rests upon the top of a second plate, V,

to which it is secured by means of the two setscrews W.

Secured to the inner edge of the plate V is a suitable fiat spring, X, which bears against the upturned edges of the plate U, and thus serves to force the plate U, with the feed-rod upon its top, over to the left, for the purpose of bringing the endof the rod exactly over the center of the saw that is being sharpened whenever the set-screws W are loosened. By tightening the screws the plate U, together with the rod, is moved toward the right.

In order that the feed-rod may be raised or depressed, so as to adapt it to saws of difl'erent sizes, the plate V is secured to a vertical plate, Y, by means of the set-screws Z, which pass through the two circular end slots and the straight central slot in the plate Y. By means of these slots and screws the plate V can be raised or depressed its entire length, or tilted up at either end, according as it is desired to adjust the end of the feed-rod to different-sized saws.

Also journaled in the bearings H is a shaft,

A, which is provided with a pinion, B, to mesh with the driving-wheel, and with a crank, 0, upon each of its ends. Attached to each of these cranks is a connecting-rod, D, which is pivoted at its inner end to the coupling E upon the inner end of the filerod F. This coupling is swiveled or otherwise attached to the end of the file-rod, so as to draw the rod back and forth through its bearings, and at the same time allow the rod a slight twisting or turning movement, for the purpose of imparting a twisting movement to the file which is secured to its outer end. Upon the file-rod, in between its two bearings, is either secured a pinion, G, having diagonal teeth, as shown, or the diagonal teeth may be formed directly upon the rod, if so preferred. These diagonal teeth catch in diagonal grooves made in aplate, H, which is secured to the plate upon which the rod is journaled; or the grooves may be made in the plate itself, if so preferred. As each file-rod is drawn back and forth by the movements of the cranks a slight turning or twisting movement is imparted to it.

The plate 1, upon which the bearings for the file-rod are formed, rests upon a second plate, J, and to which it is secured by means of two set-screws, L. In between these two plates, along their vertical edges, is placed a suitable spring, N for the purpose of forcing the plate 1 inward, and thus forcing the file against the teeth of the saw. By regulating the set-screws the pressure of the files against the teeth can be regulated at will. These two plates are secured to a third vertical plate, 0, which has a straight central slot and two curved end slots, and through which are passed suitable set-screws for securing the two plates in any desired position. By means of these slots and set-screws the file-rods can be tilted upward or depressed, or can be raised or lowered, so as to adapt them to saws of different sizes. The construction of these three plates is the same as that shown for the purpose of adjusting the feed-rod.

The files It are secured to the ends of the file-rods by means of the rods S, which are secured into the ends of the file-rods, and which are flattened at their outer ends, so that the dovetail-shaped coupling T can be slipped over the top of both this flattened rod and the top of the file, and then all three parts are rigidly secured together by means of a setscrew.

The number of strokes to be given by the file-rods can be regulated by the size and relative proportions of the two wheels which are placed upon the operating-shaftsf Projecting outward from the bottom of the base plate, underneath the file rods, are the two pressure-arms V, which have springs secured to their under sides, and which bear upon the blocks between the gin-saws, and serve to keep the feed-rod from moving the saw forward more than one tooth at a time.

Having thus described my invention, I claim- 1. In a gin-saw-filing machine, the combination of the driving-shaft, the eccentric M, rod N, and vertically-adjustable coupling 0 with the coupling It, straps S, feed-rod T, a vertically-slotted plate or bearing, Y, a verticallyadjustable plate, V, and plate U, whereby the stroke of the feed-rod is shortened'or lengthened and the rod adjusted, substantially as shown.

2. The combination of feed-rod T, vertically- .slotted plate Y, set-screws Z, plate V, spring X, set-screws W, and plate U, substantially as set forth.

3. The combination of the file-rod and its reciprocating mechanism with the plate I, laterally adj ustable, the plate J, vertically adjustable, the slotted plate 0, and the spring N, substantially as described.

In testimony that I claim the foregoing I have hereunto set my hand this 23d'day of November, 1880.

JAMES HOSEY.

Witnesses J OSEPH B. SMITH, B. F. RAY. 

